Rationalizing the Denominator Question Stack Activity

I created this question stack activity to give my students some much-needed practice with rationalizing the denominator.

Question stacks are one of my favorite practice structures.  Students are given a double-sided deck of ten cards.  One side of the card features a question.  The other side features the answer to a DIFFERENT question.  

Students begin the activity by turning over all of the cards to reveal ALL of the answers.  I tell my students this is their answer bank.  

Then, students flip over one card of their choosing.  This will be their first problem to solve.  When students find the solution, it should be in the answer bank if they have done everything correctly.  They pick up the solution card and flip it over to reveal the next question. 

I love question stacks because they are self-checking.  This means I can focus my help on the groups struggling the most.  The answer bank gets smaller and smaller with each question which helps build student confidence.  

Here are the questions.  I put boxes around the questions to make them easier to spot. 

And, here’s the answer bank.